Here's some "official" news on farting:
From silent but deadly to letting it rip (and blaming the dog), farts are a part of everyday life. However, gas is usually only a hot topic for teenage boys (and even then, it's pretty much limited to armpit flatulence), so it’s no surprise that the facts on farts get lost behind the jokes. Time to clear the (smelly) air!
Symptoms of Gas
We’re literally farting around all day long. A healthy person passes gas an average of 13 to 21 times per day, but there could be a problem if it’s significantly higher than that. Burping, bloating, and abdominal discomfort can also indicate that a little too much air has made its way inside the gastrointestinal (GI) tract.
Causes of Gas
Hold on to your shorts, folks, because this is a quite a long list. From everyday occurrences to severe disease, plenty of things can lead to extra air in the plumbing. Gas is a combination of air introduced into the GI tract from outside your body (i.e., room air) and various chemical gases produced by bacteria in the colon.
The author:
https://www.whimn.com.au/strength/h...l/news-story/fc29e611565d079059e08728eadd4e62